Children wave Vietnamese and American flags while waiting for arrival of U.S. President Barack Obama (not pictured) before a welcoming ceremony at the Presidential Palace in Hanoi, Vietnam May 23, 2016. (Photo by Reuters/Kham)

Pham Thi Thanh drinks a glass of water used as a treatment during a medium ritual at a Hau Dong ceremony at Phu Day temple in Nam Dinh province, Vietnam, May 7, 2017. Dating to the 16th century, Hau Dong centres on a belief in the Mother Goddesses of three realms – forest, water and heaven. It draws from elements of Taoism, Buddhism and other religions. (Photo by Reuters/Kham)

Vietnamese female commissioned officers of the signal force march during a parade marking their 70th National Day at Ba Dinh square in Hanoi, Vietnam September 2, 2015. (Photo by Reuters/Kham)

A woman collects lotus flowers at a lake in Hanoi, Vietnam, 20 June 2018. Lotus flowers, that bloom every June, are collected by Vietnamese people for their inner parts to be mixed with tea for fragrance. (Photo by Luong Thai Linh/EPA/EFE)

The colourful process of salt harvesting is captured at the Hon Khoi Salt Fields in Nha Trang, Vietnam in December 2022. (Photo by Hilton Chen/Solent News & Photo Agency)

A Sphynx cat is held by its owner at the WCF International Cat Show in Hanoi, Vietnam, 02 April 2023. The two-day event opened on 01 April at the Van Ho Exhibition Centre in Hanoi. (Photo by Luong Thai Linh/EPA)

This aerial picture taken on June 29, 2024 shows fishing boats moored at a beach in Danang, central Vietnam. (Photo by Dale De La Rey/AFP Photo)

A boy sits in a floating basket as people wade through a flooded street following the impact of Typhoon Yagi, in Hanoi, Vietnam, on September 11, 2024. (Photo by Khanh Vu/Reuters)